Single-trigger firearm.



A. E. LARD.

SINGLE TRIGGER FIREARM.

APPLICATION FILED uov.25, 190a. RENEWED APR. 8. 1914.

Patented July 27, 1915.

3 SHEETSSHEET 1.

V- m .1 w M a cow-nu mm" C0., WMmNmu. D. c.

A. E. LARD.

SINGLE TRIGGER FIREARM.

APPLICATION FILED uov.2s. I908. RENEWED APR- 8, 1914.

1,147,737. Patented July 27, 1915.

3 SHEETSSHEET 2.

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COLUMBIA PLANOCIRAPH (IO-,WASHINGTDN. n. c.

A. E. LARD.

SlNGLE TRIGGER FIREARM. APPLICAHON FILED NOV. 25, 1908. nzmwzn APR. 8,1914.

coLuMmA PLANOGRAPH CO-.WASH1NGTQN. 1.).C,

ALLAN E. LARD, OF WASHINGTON, DISTRICT OF COLUMBIA.

SINGLE-TRIGGER FIREARM.

Specification of Letters Patent.

Patented July 27, 1915.

Application filed November 25, 1908, Serial No. 464,489. Renewed April8, 1914. Serial No. 830,542.

To all whom it may concern:

Be it known that I, ALLAN E. LARD, a citizen of the United States,residing at Washington, in the District of Columbia, have inventedcertain new and useful Improvements in SingleTrigger Firearms, of whichthe following is a specification.

My present invention pertains to improvements in single-triggerfirearms, the construction and advantages of which will be hereinafterset forth, reference being had to the accompanying drawings, wherein:

Figure l is a side elevation of the firing mechanism, with the parts inposition ready for firing the first barrel, the lock-carrying platesbeing omitted for the sake of clearness; Fig. 2 a transverse verticalsectional view taken on the line aa. of Fig. 1, the lock plates andscars being shown in posi tion; Fig. 3 a side elevation, partly insection, of the firing mechanism, as viewed fromthe side opposite thatshown in Fig. 1; Fig. eta side elevation, illustrating the position ofthe parts as they appear at the moment of discharge of the first barrel;Fig. 5 a similar View, showing the position of the parts preparatory tothe discharge of the second barrel; Fig. 6 a horizontal sectional view,taken on the line bb of Fig. 3; Fig. 7 a detail view of one form of thespur lever; Fig. 8 abottom plan view thereof; Fig. 8 a perspective viewof a modified form of the spur lever; Fig. 9 a detail view showinganother modified form of the spur lever; Fig. 10 a view showing a stillfurther modification of the spur lever; Fig. 11 a perspective view ofthe check-stud; Fig. 12 a similar view showing a modified form of thecheck-stud; Fig. 12 a top plan view illustrating a still furthermodification of the check-stud; Fig. 13 a perspective view of theselective lever; Fig. 1 1 a perspective View of the trigger and the spurlever; Fig. 15 a like view of the slide which is employed to operate theselective lever, a portion of the trigger and the spring which is commonto both of said parts; and Fig. 16 a perspective view of thefiring-plate and the selective lever which is carried thereby.

The construction herein set forth may be termed an improvement upon themechanism shown in my copending application filed July 2%, 1903, SerialNo. 166,898, now Letters Patent No. 1,011,972, issued under date ofDecember 19, 1911.

The main improvements embodied in this application and forming the basisthereof may be stated as follows: First, an improved bearing for thespur lever, which permits said lever to be reset by the action of thescars, thus doing away with the necessity of employing a settingmechanism operated through the set rod. Furthermore, such constructionprevents the parts from gumming, wearing or becoming indented and thusinterfering with the proper functioning of the mechanism; second,providing a new form of face for the check-stud, whereby the object justset forth will be more surely accomplished; third, milling out orreducing certain portions of the mechanism, more specifically, thetrigger arm, the selective slide, and spur lever, whereby the bearingsurfaces afforded by said parts will be re duced and the clogging of themechanism by rust, dirt or the like, will be minimized; fourth, animproved method of connecting the spur-lever with its spring; fifth,providing a construction whereby the firing-plate may be readilypositioned upon the triggerplate of an ordinary double-barrel gun inwhich a single trigger mechanism is to be substituted without in anymanner altering the two-trigger trigger-plate or the box extendingupwardly therefrom; and sixth, providing a new form of selective slide.\Vith these and other improvements in view, a detailed description ofthe invention will be given.

In the drawings, 1 denotes the triggerplate, which has the usualtrigger-box or lug 2, provided with the vertically-disposed slots 3 and1, see Fig. 6, which as employed in double-barrel. guns is for thereception of separate triggers. The lock-plates 5 and 6 and the scars 7and 8 are illustrated in Fig. '2. Fulcrumed upon a pin 9, extendinghorizontally through the box 2, is the trigger 10, provided with anupwardly-projecting arm 11, the upper end of which is pivotallyconnected to a link 12, to which in turn is pivoted the upper end of aspur-lever 13, said spur-lever being fulcrumed upon a pin 14: extendinglaterally from an upwardlyprojecting arm 15 of the firing-plate 16. Inorder that the firing-plate may be secured to the trigger-plate of theordinary doublebarrel gun without the necessity of remodeling saidtrigger-plate, or in other words, without the removal of the centralpartition 17, Fig. 6, the forward end of the firingplate is reduced sothat said end may pass into the slot 4: and be secured in position uponthe pivot-pin 9. The firing plate is provided with laterally-extendinglugs 18 and 19, which are located adjacent to the rear end of and belowa transverse slot 20 formed in the firing-plate, in which slot ispivotally mounted a selective lever 21. The rear end of said lever isprovided with fingers 22, one of which normally overlies one or theother of the lugs 18, 19 according to the position of the selectivelever, the parts being so proportioned that one finger is withdrawn fromover its lug as the opposite finger is thrown outwardly over its luginto position below the sear, as shown in Fig. 2. To properly positionsaid lever a slide, shown in detail in Fig. 15, is employed. The slidecomprises a combined cover and push-plate 23, formed at its oppositeends with serrated projections 24: and 25, by means of which the platemay be moved in one or the other direction; a body portion 26 which fitsin a slot formed in the trigger plate; and anupwardly-projecting arm 27which has an outwardly and downwardlyeXtending finger 28 formed thereon.lVhen the parts are positioned, the arm 27 lies closeagainst theselective lever, and according to its position contacts with one or another of the cam faces 29, 30, see Figs. 6 and 13, and as a consequencethrows the selective lever to one or the other of its extreme positions,thereby bringing one of the fingers 22 into operative relation with oneor the other of the sears 7, 8.

A spring struck up out of sheet metal and 'provided with two arms 31 and32 (see Fig. 15) is secured to the trigger-plate, the arm 32 beingprovided with an inverted V- shaped projection at its free end, whichcooperates or functions with the end of the downwardly-projecting finger28 and serves to hold the slide in one or the other of its adjustedpositions, the finger passing to one or the other side of said V-shapedprojection. The free end of the opposite arm 31 bears upon a projectionformed upon the trigger and serves to depress the same.

As will be seen upon reference to Fig. 13, in which the selective leveris shown in detail, the central portion thereof is thinned or cut awayso that said lever has but a relatively slight bearing at each end onthe walls of the slot or opening in which it is mounted. By reason ofsuch relatively small or narrow bearing-points it may be readily movedor shifted and the accumulation of dust,- rust or the like will notprevent its operation. So, too, the trigger and the upwardly-projectingarm 11 thereof will be reduced upon that side which stands adjacent tothe arm 15, as best shown in Fig. 14, so as to provide a clearance andavoid the accumulation of dust, rust or the like, which would preventsuch parts from func tioning properly.

The spur lever, at a point belowthe pin or stud 14 upon which it isfulcrumed, is provided with a transverse opening 33, with whichcommunicates a smaller opening 34, see Figs. 1 and 14, said latteropeningebeing formed in the under face of the spur lever and receivingthe upper end of a wire spring 35. The lower end of the springisprovided with a coiled section through which is passed a screw 36, thescrew being secured in the.

firingplate. The spring is prevented from turning about said screw byhaving its lower end passed into an opening 37 formed in the firingplate adjacent to the screw, as clearly shown in Fig. 1. The springserves to throw thelower end of the spur lever rearwardly. This form ofspring has been found highly efficient, and cannot be readily displacedby a jar or by a careless user, who frequently inserts a screw-driver orlike tool into the gun for the purpose of removing the lefthand lockplate after the ri ht-hand plate has been removed. In the constructionshown in my application above mentioned, in which the upper end of thespring is bent laterally and projects into an opening, as the opening33, the spring may be displaced in the manner just set forth. The upperend of the spring has but a slight bearing upon the edge where the twoopenings33, 34 coincide, and is very sensitive in its action. The present construction is also advantageous over the former construction inthat it does away with the bend in the upper end of the spring, makingits formation simpler and producing a spring less liable to break.v

The lower end of the spur lever in the present form is provided withmeans, such as a projecting member, whereby it may be readily moved offof the check-stud through the action of the sears when the gun is brokenand the sears are set. Said means also provides against the wear andgumming of the parts and consequent imperfect functioning of the spurlever. In the preferred construction of spur lever I form an opening orrecess in the lower end thereof and mount a hardened steel ball 38,therein, see Fig. 7, the ball being held in position by making a seriesof indentations adjacent to the ball by a punch or the like, as clearlyshown in Fig. 8. This holds the ball in place but allows it to revolveand provides a rounded hard surface, which contacts with the checkstud39, which is mounted in the triggerplate. Preferably the upper face ofthe check-stud will be hardened and formed with a series of transverselyrounded ridges,

as shown in Fig. 11, which ridges, while holding the spur-lever in theposition shown in Fig. 5 or in that position in which the lever restsupon the check-stud preparatory to the firing of the second barrel, willnevertheless permit the spurlever to be moved rearwardly with but slightforce, or that exerted by the sear springs when the gun is broken.Furthermore, such construction prevents the indenting of the upper faceof the check-stud, which would occur upon the impact of the lower end ofthe spur-lever upon the check-stud after the firing of the secondbarrel, or when the spur lever comes to position upon the check-studafter the firing of the first barrel or the passing of the spur-leverfrom the position shown in Fig. 4: to that shown in Fig. 5. Instead ofemploying a ball, the lower end of the spur-lever may be drilled out anda rod a0, having a rounded end and provided with seats or depressions41, may be used. The rod will be held in position by forcing the metalof the spur lever into the seats or depressions 41, as indicated in Fig.9. In Fig. 8 a still further modification is shown, in which instead ofemploying a ball a roller 38 is mounted in the lower end of thespur-lever, the periphcry of the roller being preferably slightlyrounded or curved in line with its axis.

In so far as the generic invention is concerned, the lower end of thespur-lever may be rounded and hardened, such construction beingillustrated in Fig. 10. It is to be understood, however, that suchconstruction is not the preferred one, and is not as reliable as thatshown in Figs. 7 to 9 inclusive.

The spur l2 of the spur-lever is adapted to coact with a locking-postl3, secured to and extending upward from the triggerplate, as in theapplication above mentioned.

In Fig. 12 a modification of the check-stud is shown. Instead of havingthe form of a post screwed directly into the trigger-plate, the checkportion id is formed upon the outer end of a spring arm d5 which may besecured in position upon the trigger-plate by a screw passing through ahole l6. The arm may be bent so as to bring the check surface intoproper position with relation to the spur-lever and thereafter hardenedso as to maintain its proper position with reference to said lever. InFig. 12 another modification of the check-stud is shown. In thisinstance the upper face of the stud is provided with a series ofintersecting channels or grooves 44 which, of course, will form a seriesof rounded knobs or projections e49.

As in my former application, I employ a safety weight, l7, to preventthe double discharge of the arm. Said weight is provided with adownwardly-projecting arm as which passes into and through a slot oropening formed in the rear end of the firing-plate and is pivotallyconnected thereto by a pin 49. A spring 50, the forward end of which isseated in a recess formed in the upper face of the firing-plate, whilethe rear end thereof passes into a deep seat or recess in the weight,tends to throw the weight rearwardly. To the lower end of the arm i8 issecured a pin 51 which extends laterally to a point in line with thepath of movement of the spur-lever, and when the arm is fired the weightis thrown forwardly and as a consequence the pin 51 will contact withthe under face of the spur-lever and throw itinto locking position withreference to the locking post a3 until the arm has assumed its normalposition. The weight prevents the involuntary discharge of the arm, dueto the pull on the trigger caused by the rebound or the forward movementof the gun when the first barrel is discharged.

It is to be noted that in the construction above set forth no set rod isemployed to position the parts, the spur-lever being moved to its properposition by the pressure which is exerted by the scars. Under the formerconstruction it was somewhat ditli cult, if not impossible, toaccomplish this, owing to the presence of rust, gum or the like, whichcollected upon the parts, and to the indentation which the end of thespur lever eventually makes in the upper face of the check-stud. Thisindentation is caused by the impact of the spur-lever upon the top ofthe check-stud during the recoil incident to firing the second barrel.

As before noted, in the present construction the sear springs exert alimited amount of power, but if the pressure required to reset thefiring-plate be too great for the sear springs, then the spur-lever willremain upon the top of the check-stud, thus preventing one of the searsfrom entering its notch in the hammer. A twopounds pressure, forinstance, on the lugs would cause the spur-lever to slip off of thecheckstud if the contacting surfaces were of the proper form and shape,but if these surfaces gum, rust, or change their form by reason ofindentation then it requires a greater pressure than the sear springsare capa le of exerting to remove the spur-lever from the check-stud.The spur-lever must, not, however, slide off of the check-stud tooeasily; otherwise, it might fail to stay on the checkstud or in theposition shown in Fig. 5, after the first barrel is discharged. Thearrangement above set forth has been found in practice to admirablyaccomplish the d sired results (particularly where the ball 38 isemployed), permitting the sear springs to move the spur-lever from thestud when the gun is cocked and yet holding the spurlever in theposition shown in Fig. 5, preparatory to the discharge of the secondbarrel. The rounded contact surfaces of the lower end of the spur-leverand the upper face' of the check-stud will not become in-' dented, owingto the fact that the two hardened ball-like surfaces cause thespur-lever to begin to slide or deflect before any great amount ofimpact is exerted; nor will the from the trigger-plate; a check-stud;and

.0, loosely upon the upper face of the checka member pivotally connectedto the firingplate, the lower end of said member being provided with arounded projection adapt ed to contact with and bear directly but stud.1

2. In a firearm, the combination of a trigger plate; a firing-platepivotally mounted thereon; a post extending upwardly from a thetrigger-plate; a check-stud; a member pivotally connected to thefiring-plate; and means carried at the lower end of said memher forholding the same upon the checkstud under certain positions of themechanism and permitting the same to be readily removed therefrom.

3. In a firearm, the combination of a trigger-plate; a firing-platepivotally mounted thereon; a fixed post extending upwardly from thetrigger-plate; a check-stud provided with a series of roundedprojections;

a member pivotally connected to the firingplate; and a rounded membercarried at, the lower end of said pivoted member and adapted to Icontact and coact with the rounded projections on the check-stud toproperly position the parts.

4. In a firearm, the combination of a trigger-plate; a firing-platepivotally mounted thereon; a fixed post extending upwardly from thetrigger-plate; a check-stud; a member pivotally connected to thefiringplate; and a member provided with a rounded face secured in thelower end of the firstmentioned member and adapted to coact with theupper face of the check-stud.

5. In a firearm, the combination of a trigger-plate; a firingplatepivotally mounted thereon; a fixed post extending upwardly from thetrigger-plate; a check-stud; a member pivotally connected to thefiringplate; and a ball mounted in the lower end of the member andadapted to coact with the check-stud.

6. In a firearm, the combination of a trigger-plate; a firing-platepivotally mounted thereon; a fixed post extending upwardly from thetrigger-plate; a check-stud provided with a series of roundedprojections upon its upper face; a member pivotally connected to thefiring plate; and a member secured in the lower end of saidfirst-mentioned member and adapted to coact with the rounded projectionsupon the check-stud.

7. In a firearm, the combination of a trigger-plate; a firing-platepivotally mounted thereon; a fixed post extending upwardly from thetrigger-plate; a check-stud provided with a plurality of roundedprojections upon its upper face; a member pivotally connected to thefiring-plate; and a ball secured in the lower end of said member andadapted to contact with the rounded projections on the check-stud.

8. In a firearm, the combination of a trigger-plate; a firing-platemounted thereon; a trigger; a spur-lever pivotally connected to thefiring-plate and likewise connected to the trigger; a locking-post; anda check-stud adapted to coact with the lower extremity of thespur-lever, said check-stud comprising an arm adapted to be secured atone end to the trigger-plate and provided with an undulating checksurface on its upper face at the outer free end thereof.

9. In a firearm, the combination of a trigger-plate; a firingplatepivotally mounted thereon; a trigger pivotally mounted upon thetrigger-plate; a spur-lever pivotally connected to the firing-plate andlikewise pivotally connected to the trigger; a lockingpost; and acheck-stud, said stud comprising an arm adapted to be secured at one endto the trigger-plate, the opposite end of the arm being provided with aseries of rounded projections or ridges. I

10. In a firearm, the combination of a trigger-plate; a pair of sears; afiring-plate; means carried by the firing-plate adapted to coact withsaid sears; a spur-lever pivotally connected to the firing-plate; alocking-post extending upwardly from the trigger-plate; a check-studcarried by the trigger-plate; and means carried by the spur-lever uponits lower end and contacting with the upper face of the check-stud forpermitting the sear springs to move the firing-plate clownwardly andthrow the spur-lever off of the I check-stud.

11. In a firearm, the combination of a trigger-plate; a firing-platepivotally mounted thereon; a spur-lever pivotally connected to thefiring-plate; a check-stud provided with a series oftransversely-disposed ridges, the upper edges of which are rounded; alocking post extending upwardly from the trigger-plate; and a roundedbearing provided at the lower end of the spur-lever and adapted tocontact with the ridges of the check-stud. I

12. In a firearm, the combination of a trigger-plate; a firing-platepivotally mounted thereon; a spur-lever pivotally connected tothefiring-plate; a check-stud provided with a series oftransversely-disposed ridges,

the upper edges of which are rounded; a locking-post extending upwardlyfrom the trigger-plate; and a ball mounted in the lower end of thespur-lever.

13. In a firearm, the combination of a trigger-plate; a trigger-boxextending upwardly therefrom and provided with a pair of slots; atrigger, the forward end of which extends into one of said slots; afiringplate standing adjacent to the trigger, the forward end of thefiring-plate being reduced and entering the second slot; a pin uponwhich said trigger and firing-plate are pivoted; a spur-lever pivotallyconnected to the firing-plate; a check-stud carried by the triggerplate;and a locking-post arranged in rear of the check-stud.

1%. In a firearm, the combination of a trigger-plate; a trigger-boxextending upwardly therefrom and provided with a pair ofvertically-disposed slots; a trigger, the forward end of which extendsinto one of said slots; a firing-plate standing adjacent to the trigger,the forward end of said plate being reduced and entering the secondslot; a pin passing through the trigger-box and forming the pivot forthe trigger and firingplate; members carried by the firing-plate adaptedto coact with the sears of the firearm; a selective lever pivotallymounted in a slot extending horizontally through the firing-plate; meansfor positioning said lever; a spur-lever pivotally mounted upon thefiring-plate; a check-stud; and a locking-post.

15. In a firearm, the combination of a trigger-plate; a trigger;afiring-plate standing adjacent to the trigger, that portion of thetrigger which lies next adjacent to the firing-plate being somewhatreduced in thickness in order to provide clearance between the parts;members carried by the firingplate adapted to coact with the sears ofthe firearm; a selective lever mounted in said plate and adapted to beprojected over one or the other of said members; a spurlever; acheck-stud, adapted to coact with said spur-lever; and a locking-post.

16. In a firearm, the combination of a trigger-plate; a trigger mountedthereon; a firing-plate also mounted upon the triggerplate, saidfiring-plate being provided with a horizontally-disposed slot; a lugextending outwardly from each side of the firingplate and adapted tocoact with the sears of the firearm; a selective lever pivotally mountedin the firing-plate, the body of the lever being reduced in thickness soas to provide clearance between said reduced portion and the walls ofthe slot; a spur-lever; a check-stud; and a locking-post.

17. In a firearm, the combination of a triggenplate; a trigger pivotallymounted thereon, said trigger being provided with an upwardly-projectingarm; a firing-plate pivot-ally mounted upon the trigger-plate andlikewise provided with an upwardlyprojecting arm, the parts being soproportioned as to provide clearance between the arms; a pair of lugsextending outwardly from said firing-plate and adapted to coact with thesears of the gun; a selective lever pivotally mounted in ahorizontallydisposed slot formed in the body of the firing-plate, thecentral portion of the lever being reduced in thickness so as to provideclearance between said portion and the walls of the slot; a spur-leverpivotally connected to the upper end of the arm of the firingplate; alink connecting the upper end of the spur-lever and the arm of thetrigger; acheck-stud adapted to coact with the spurlever; and alocking-post likewise adapted to coact with the spur-lever.

18. In a firearm, the combination of a trigger-plate; a firing-platemounted thereon; a trigger; a spur-lever pivotally mounted upon theupper portion of the firingplate, said lever being provided with anopening in the forward face thereof; connections between said spur-leverand the trigger; a spring secured to the firing-plate and having itsupper end extending into the opening formed in the spur-lever; acheckstud adapted to coact with the spur-lever; and a locking-post.

19. In a firearm, the combination of a trigger-plate; a trigger mountedthereon; a firing-plate; a spur-lever pivotally connected to thefiring-plate, said lever being provided with a transverse hole oropening formed therein at a point below the pivotal connection to thefiring-plate and with a second hole or opening extending from the underface of the lever to the firstanentioned hole or opening; connectionsbetween the upper end of the spur-lever and the trigger; a springsecured to the firingplate and having its upper end extending throughthe second named hole and projecting into the first-- named hole in thespur-lever; a check-stud; and a locking-post.

20. In a firearm, the combination of a trigger-plate; a trigger mountedthereon; a firing-plate also mounted upon the triggerplate; a spur-leverpivotally mounted upon the upper end of the firing-plate, provided withan opening extending transversely through the same at a point below thepivotal connection with the firing-plate and with a second holeextending inwardly from the forward lower face of the spur-lever andterminating in the first-named opening; a wire spring secured at itslower end to the firingplate, its upper end projecting through thesecond-named opening and terminating in the first opening; a checlcstud;and a locking-post.

21. In a firearm, the combination of a triggenplate; a trigger mountedthereon; a

firing-plate likewise mounted upon the trigger-plate, said firing-platebeing provided with a horizontally-disposed slot; a pair of lugsextending outwardly, one from each side of said firing-plate; aselective lever pivotally mounted in the slot, adapted to be thrown intooperative relation with one or another of said lugs; a slide mounted ina slot formed in the trigger-plate adjacent to the firing-plate, saidslide being adapted to cooperate with the selective lever to throw thelever into one or another position, the slide being formed with adownwardly-pro jecting fin er; a spring coacting with the finger on t eslide and serving to hold it in one or another of its adjusted positionsand likewise to hold it in its position in the slot aforesaid; aspur-lever pivotally mounted upon the firing-plate; a check-stud; and alocking post. I

22. In a firearm, the combination of a trigger-plate; a trigger mountedthereon; a firing-plate likewise mounted upon the trigger-plate, saidfiring-plate being provided with a horizontally-disposed slot extendingtherethrough; a lug extending outwardly from each side of thefiring-plate, at a point below the slot; a selective lever pivotallymounted in the slot, adapted to be moved into operative relation withone or the other of said lugs; a slide; an arm carried there by andstanding adjacent to the selective lever and adapted, when moved, tothrow the lever into one or another of its positions, said arm beingprovided with a downwardlyextending finger; and a spring provided withtwoarms, one of said arms bearing upon the trigger and the other beingprovided with an inverted V-shaped projection adapted to coact with thefinger of the arm and to hold it in one or another of its adjustedpositions.

23. In a firearm, the combination of a trigger-plate; a triggerpivotally mounted thereon; a firing-plate likewise mounted I upon thetrigger-plate, said firing-plate being provided with ahorizontally-disposed slot; a lug extending outwardly from each side ofthe firing-plate; a selective lever mounted in the slot and adapted tobe thrown into operative relation with one or the other of said lugs; aslide mounted adjacent to the lever, said slide being provided with adownwardly-projecting finger; a combined push and cover plate secured tothe lower portion of the slide and underlying the trigger-plate, saidpush plate being provided with serrated projections at opposite ends; aspring secured to the trigger-plate, said spring having two arms, one ofwhich rests upon the trigger and moves the same downwardly, while theopposite arm is provided with an inverted V-shaped projection adapted tocoact with the finger upon the slide; a spur-lever pivotally connectedto the firing-plate; a check-stud; and a locking-post, both adapted tocooperate with the spur-lever.

24. In a firearm, the combination of a trigger-plate; a firing-platepivotally mounted thereon; a fixed post extending upwardly from thetrigger-plate; a checkstud; a spur-lever pivotally connected to thefiring-plate; and a member mounted in the lower end of the spur-lever,said member being free to roll and adapted to coact with the check-stud.

'25. In a firearm, the combination of a trigger-plate; a firing-platepivotally mounted thereon; a fixed post extending upwardly from thetrigger-plate; a checkstud having a series of rounded projections uponits upper face; a spur-lever pivotally connected to the firing-plate;and a member mounted in the lower end of the spur-lever, said memberbeing free to rotate or roll and adapted to coact with the roundedprojections upon the check-stud.

26. In a firearm, the combination of a trigger-plate; a firing-platepivotally mounted thereon; a fixed post extending upwardly from thetrigger-plate; a checkstud provided with a series of rounded projectionsupon its upper face; a spur-lever pivotally connected to thefiring-plate; and a ball mounted in the lower end of the spurlever, saidball being free to rotate in its seat and adapted to coact with thecheckstud.

27. In a firearm, the combination of a trigger-plate; a firing-platepivotally mounted thereon; a fixed post extending upwardly from thetrigger-plate; a checkstud having a series of intersecting groovesformed upon its upper face, thereby forming a series of projections; aspur-lever pivotally connected to the firing-plate; and a member mountedin the lower end of the spur-lever, said member being free to rotate orroll and adapted to contact with the projections formed upon thecheck-stud.

28. In a firearm, the combination of a trigger-plate; a firing-platepivotally mounted thereon; a fixed post extending upwardly from thetrigger-plate; a checkstud having a series of rounded projections formedupon its upper face, said projections 7 trigger-plate; a triggerpivotally mounted thereon; firing mechanism controlled by said trigger;a selective lever carried by the firlng mechanism; a slide provided withan upwardly-extending arm, the arm working in a slot formed inthetrigger-plate; a fingel, extending downwardly from the upname to thisspecification in the presence wardly-extending portion of the arm; andof two subscribing witnesses.

a spring serving to hold the slide and arm ALLAN E LARD in one oranother of their adjusted positions and also to hold them againstremoval from \Vitnesses:

the slot in the trigger-plate. HORACE A. DODGE,

In testimony whereof I have signed my FANNIE VVIsE.

copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

